Superhorizon curvaton amplitude in inflation and pre-big bang cosmology

Details Superhorizon curvaton amplitude in inflation and pre-big bang cosmology Superhorizon curvaton amplitude in inflation and pre-big bang cosmology

2002-08-27

arxiv.org/abs/hep-ph/0208241v2

Nucl.Phys. B656 (2003) 239-251

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, LaTeX. Discussion and references added

Scientific paper

10.1016/S0550-3213(03)00114-7

We follow the evolution of the curvaton on superhorizon scales and check that the spectral tilt of the curvaton perturbations is unchanged as the curvaton becomes non-relativistic. Both inflation and pre-big bang cosmology can be treated since the curvaton mechanism within the two scenarios works the same way. We also discuss the amplitude of the density perturbations, which leads to some interesting constrains on the pre-big bang scenario. It is shown that within a SL(3,R) non-linear sigma model one of the three axions has the right coupling to the dilaton and moduli to yield a flat spectrum with a high string scale, if a quadratic non-perturbative potential is generated and an intermediate string phase lasts long enough.

Affiliated with

Also associated with

No associations

Rating

Superhorizon curvaton amplitude in inflation and pre-big bang cosmology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Superhorizon curvaton amplitude in inflation and pre-big bang cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superhorizon curvaton amplitude in inflation and pre-big bang cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-644551